Volume 2 Series 2022

Soil erosion is a naturally occurring process that affects all landforms determined by four fundamental factors: soil characteristics, vegetative cover, topography, and climate. Various soil erosion control is processed to lessen and delay from happening using different parts of a plant. Hence, this study aimed to produce BafNet and compare it to Coconet in terms of water absorption capacity, tensile strength, and net efficiency or soil reduction efficiency. It was revealed that the banana pseudo-stem fiber (BPSF) rope could absorb more water than the coco fiber rope by 38.94%. Also, it is stronger than the coco fiber rope by 165.2 N and 5.85 MPa for a one-meter rope having a diameter of 6 mm. For torrential rain on a silty type of soil at a 30° slope, the results exhibited that BafNet is more efficient than the Coconet by 11.29%.

Losses and destruction from floods and landslides increase in the Philippines as typhoons become more frequent and intense. A previous study conceptualizes a lightweight bamboo-based hybrid amphibious house with a buoyant basis of HDPE sewer pipes in a steel cage and easy base isolation. The main objective of this project was to design disaster-resistant Modern Bahay Kubo using Bamboo as the primary material data for wind loads, dead loads, and live loads have been obtained from the National Structural Code of the Philippines 2015 and the results of the forces applied are enough to endure the disaster-resistant Modern Bahay Kubo. Since no standard code is available for Bamboo, the Steel code of the NSCP 2015 has been adapted wherever necessary. The STAAD analysis findings indicate different maximum displacement values from different loading and load combinations specified by NSCP. In terms of wind load, it shows that the most significant displacement is roughly 0.099mm at 320 kph, indicating that the design for Bahay Kubo is durable and strong enough to endure wind speeds ranging from 240 to 320 kilometers per hour.

The COVID-19 pandemic has brought major inconvenience to the education system due to the unprecedented shift in the method of instruction. Limited physical classes to reduce close contact, strong adherence to the Covid-19 protocols, and developing ways to reinforce the educational missions of institutions must be administered to ensure a virus-free environment. Inclined to these constraints, an automated fog disinfecting machine was created. Its goal is to automatically disinfect the space by considering its occupancy variable. The effectiveness was assessed through the Petri-disk diffusion method. The results showed an overwhelming decrease in microbial growth after it undergoes the disinfection process. Many factors have contributed to achieving such results, some of which are the composition of the disinfectant liquid, the mobility of fog, and the machine’s performance which added a reinforced cleaning method. The data gathered from the different tests conducted proved that the Automated Fog Disinfecting Machine is a wise choice to further reinforce the physical learning environment of academic institutions and other institutions during this time of the pandemic.

Poultry farming is one of the most progressive enterprises where millions of broilers are produced every year. Improvement on poultry farms includes systems where the basic needs of broilers are addressed. I-Light is an improved lighting system that incorporates three (3) major factors in the growth of broilers – color, photoperiod, and light intensity. This system compared the existing traditional lighting system (TL) and LED lighting system (LL) between the improved system in terms of broiler growth and at the same time determined the mortality rate and power usage. Arduino Mega Microcontroller and an LED sensor were used to control the light intensity. The performance was assessed by comparing the average weight and mortality of the chickens as well as the power usage within the conduct of the experiment. The results determined that the i-Light system performed better than both TL and LL systems. In terms of growth, the i-Light system demonstrates its ability to outperform TL and LL as seen by the fact that the i-Light system's weight gain on the final week of experimentation is 55.45% heavier than TL and 36.36% heavier than LL. It was also shown that the system logs the lowest mortality rate compared to the TL and LL system which records a 30% mortality rate which is more ideal than the 50% shown on TL and 40% for LL. The power usage results show the savings from the electricity consumption of the three systems. It shows that the i-Light used the least electricity. The i-Light system is 75.44% more efficient than the TL which saves up to 95.914 PHP monthly. On the other hand, i-Light is 63.12% more efficient than LL which saves up to 53.42 PHP per month. This study proved the system to be advantageous in terms of growing broiler chickens and power saving. Based on the results of the tests, it has been determined that using the i-Light Lighting system instead of the TL system and LL system is a viable option for poultry farmers.

This study developed a micro-hydro generator turbine utilizing water flowing into a single inflow pipe which makes the turbine rotate continuously within a specific water pressure. The device is intended to be connected to the household’s main water pipeline to generate energy and convert it into electricity that can operate small devices during emergency power outages. It comprises a turbine, generator, step-down voltage, charger module, rechargeable battery, and dc-dc boost module. From the tests conducted, the device generated an average voltage, current, and power of 4.99 V, 0.48 A, 2.40 W at 35 psi, and 4.36 V, 0.35 A, 1.54 W at 20 psi. The power efficiencies of the device at 35 psi and 20 psi were 23.97% and 15.44%, respectively. The percent charge of the built-in battery increases by 1% after an average of 9 minutes and 14.6 minutes for high and low pressure, respectively. The results showed that the device generated enough energy to supply small devices rated 5 volts like smartphones, power banks, portable lamps, and portable fans.

This study developed an inverter circuit with improved maximum power output. Specifically, the inverter was built for electrical loads that serve significant practical applications and are critical during power shortages. The modified inverter circuit was successfully designed, developed, and built using locally available components such as two 1k ohm resistors, one 4.7k, 5.6k, and 120k ohm resistors, and two 0.01 microfarad capacitors and one 0.1 microfarads 470 microfarads electrolytic. These components are the best circuit options for their functionality and reliability. The inverter circuit was first evaluated using the Multisim Circuit Simulator. Based on the features and specifications required, the one that successfully gave the most reasonable results was the one used in the actual testing. Because the inverter was not a pure sine wave, the waveform is square, indicating that it is suitable for resistive and some inductive loads. The shown square wave has period 2 and levels -1/2 and 1/2. There is an increase of about 6.28% up to 10.86% in efficiency and 2% up to 12% in the power output of the inverter circuit. The research was carried out with extensive analysis. Furthermore, the experiment results revealed that the desired data is greater than 86%, which is the average efficiency of an inverter circuit.

— Coastal erosion has become a major problem that the world is facing for various reasons. This study analyzed the shoreline rate of change of the two barangays in Ballesteros, namely: Centro East and Centro West using the Last High Tide (LHTS) of the Sea Level Affecting Marshes Method (SLAMM), specifically the Shoreline Change SAMP (Special Area Management Plan). The coastal retreat for the past 14 years (2007-2021) and the predicted possible shoreline landward movement after 15 years (2021-2036) were identified. Overall, the average shoreline rate of change is 2.236 meters per year, the approximate area of the coastal retreat for the past 14 years is 4.8 hectares, and the possible coastal retreat if there is no human intervention for the next 15 years is 5.1 hectares. As the Philippines is prone to natural disasters such as typhoons, landslides, and climate change, which cause the triggers of coastal erosion, the government should take actions like reforestation and seawalls to mitigate the coastal problem.

This study aimed to map the accessibility of the existing isolation facilities in Cabagan, Isabela, and propose probable locations suitable for establishing isolation facilities using the Geographic Information System (GIS), where the data were inputted and processed. Geocam Pro was used to collect data specifically, the geographic coordinates of the existing facilities, and Google Maps were utilized to determine their accessibility to the Milagros Albano District Hospital (MADH). A suitability map was projected, in which 100% of the proposed isolation facilities are accessible to any road network of Cabagan, Isabela, with low and moderate susceptibility to flooding and low susceptibility to landslides. The location also belongs to the non-exposed group having a radius of more than three (3) km from the sanitary landfill. The proposed location of the isolation facilities is also readily accessible to the community and a hospital accepting suspected or confirmed COVID-19 patients.

During the Coronavirus pandemic, businesses, public transportation, and social service groups are putting in place strategies to return to the 'old normal' or gradual activity. Returning to the former routine carries a higher danger, as COVID-19 is a highly contagious disease with difficult detection. Vaccination slows the pathogen's replication but does not prevent it. As a result, it is ineffective in preventing minor illnesses. COVIDEX can determine a person's temperature and assess their current condition if the user has symptoms of COVID-19, and it will also automate data logging on large establishments upon entry. It also has features of alcohol dispensing for hand sanitation. The test result of the COVIDEX temperature reading capability has shown an accuracy of 90%, its Barcode reading capability has an accuracy of 85%, and on the user ergonomics, it has 84.29% satisfaction.

Learning programming is considered to be a daunting task by many. Students would invest their time and money in books, boot camps, or university programs but would still find it hard to master the basics of programming. This problem is especially true in Java programming language, where it can take 1-2 years for an individual to master it. This study aimed to look into the adoption of an approach called the Digital Assessment Proficiency Exam to develop a mobile app that can help students learn the basics of Java. The iterative model was used in the development of the app. Six university instructors evaluated the app using the Great App Checklist with a mean score of 4.17 for purpose, 4.17 for alignment, 3.83 for pedagogical framework, 4.17 for personalization, 4.42 for ease of use, and 4.28 for app citizenship. With an evaluation ranging from 3.83 to 4.17, the product of this study is a highly effective tool for learning Java.